210 Mendeliau Inheritance in Bryonia dioica 



From this it may be expected that in the absence of (r, and G^ 

 factors in predominating amounts, there is about an equal likelihood 

 that the ovaries in F^ will be two-carpellary or three-carpellary. 



Experimental. 



In fact, the percentages of two-carjjollary flowers on the two % plants 

 of this cross were 55 per cent, and 35 per cent. 



From experimental results, therefore, the percentage of two- 

 chambered ovaries to be expected in plants of the above constitution 

 will be between 55 per cent, and 35 per cent. 



F.j^ (a). Theoretical. 



GiGiG-.G-, {G plant) x 0,7,0,(7., (F, plant) 



r -^ L r n 



I i I I 



GiGiG-iG-, GiGiG^n-i GjgjG-.G-y G^rnGilhi 



i.e., hypothetically there will be four types of plant in F.^ occurring in 

 equal numbers. 



